83 lines
3.1 KiB
JavaScript
83 lines
3.1 KiB
JavaScript
"use strict";
|
|
// Copyright 2019 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.NodeCrypto = void 0;
|
|
const crypto = require("crypto");
|
|
class NodeCrypto {
|
|
async sha256DigestBase64(str) {
|
|
return crypto.createHash('sha256').update(str).digest('base64');
|
|
}
|
|
randomBytesBase64(count) {
|
|
return crypto.randomBytes(count).toString('base64');
|
|
}
|
|
async verify(pubkey, data, signature) {
|
|
const verifier = crypto.createVerify('RSA-SHA256');
|
|
verifier.update(data);
|
|
verifier.end();
|
|
return verifier.verify(pubkey, signature, 'base64');
|
|
}
|
|
async sign(privateKey, data) {
|
|
const signer = crypto.createSign('RSA-SHA256');
|
|
signer.update(data);
|
|
signer.end();
|
|
return signer.sign(privateKey, 'base64');
|
|
}
|
|
decodeBase64StringUtf8(base64) {
|
|
return Buffer.from(base64, 'base64').toString('utf-8');
|
|
}
|
|
encodeBase64StringUtf8(text) {
|
|
return Buffer.from(text, 'utf-8').toString('base64');
|
|
}
|
|
/**
|
|
* Computes the SHA-256 hash of the provided string.
|
|
* @param str The plain text string to hash.
|
|
* @return A promise that resolves with the SHA-256 hash of the provided
|
|
* string in hexadecimal encoding.
|
|
*/
|
|
async sha256DigestHex(str) {
|
|
return crypto.createHash('sha256').update(str).digest('hex');
|
|
}
|
|
/**
|
|
* Computes the HMAC hash of a message using the provided crypto key and the
|
|
* SHA-256 algorithm.
|
|
* @param key The secret crypto key in utf-8 or ArrayBuffer format.
|
|
* @param msg The plain text message.
|
|
* @return A promise that resolves with the HMAC-SHA256 hash in ArrayBuffer
|
|
* format.
|
|
*/
|
|
async signWithHmacSha256(key, msg) {
|
|
const cryptoKey = typeof key === 'string' ? key : toBuffer(key);
|
|
return toArrayBuffer(crypto.createHmac('sha256', cryptoKey).update(msg).digest());
|
|
}
|
|
}
|
|
exports.NodeCrypto = NodeCrypto;
|
|
/**
|
|
* Converts a Node.js Buffer to an ArrayBuffer.
|
|
* https://stackoverflow.com/questions/8609289/convert-a-binary-nodejs-buffer-to-javascript-arraybuffer
|
|
* @param buffer The Buffer input to covert.
|
|
* @return The ArrayBuffer representation of the input.
|
|
*/
|
|
function toArrayBuffer(buffer) {
|
|
return buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
|
|
}
|
|
/**
|
|
* Converts an ArrayBuffer to a Node.js Buffer.
|
|
* @param arrayBuffer The ArrayBuffer input to covert.
|
|
* @return The Buffer representation of the input.
|
|
*/
|
|
function toBuffer(arrayBuffer) {
|
|
return Buffer.from(arrayBuffer);
|
|
}
|
|
//# sourceMappingURL=crypto.js.map
|